If it's not what You are looking for type in the equation solver your own equation and let us solve it.

12n^2+12n+9=0

a = 12; b = 12; c = +9;

Δ = b^{2}-4ac

Δ = 12^{2}-4·12·9

Δ = -288

Delta is less than zero, so there is no solution for the equation

| p?240=10 | | x°+14°+2x°+x°-8+105=360° | | 713=31t | | Y-3y=-3y-7 | | 0.1x-0.45=0.03x-0.15 | | 11f=253 | | x-9=-98 | | 3(x+8)-8(4x-2)=15 | | m/25=18 | | 8c+12=7+9 | | m25=18 | | 0,2x=x-170000 | | 960=30b | | 12q-4=6q+4 | | (2x+7)=(x+6 | | v+55=639 | | f/8=18 | | r+7=432 | | 45=x-17 | | x+10=0.07x-0.7 | | 2x=15?3x | | 28b=812 | | q/31=13 | | 851=f+65 | | 851=f=65 | | (x/8)+9=-5 | | (3x-9)^2=20 | | j-99=649 | | 80=19+x | | -(4x+5)=5(x+6) | | 10q=-40 | | 1.1x+1.6=2x+0.7 | | -3q+5=-1 | | 180=(12y) | | 11-n=4 | | 0.07x+0.6x=2x-5.53 | | w=45-4w | | f=62+34 | | n/5+16=21 | | 180=(4x+2) | | n/8-4=2 | | 3+3x-x+2=3x=4 | | n/6+59=61 | | -5(x+2)=-3x-6 | | 4(x+8)-8(4x-9)=18 | | X+3/2x-1=5 | | n/3+5=12 | | n/4-6=7 | | f=36=51 | | 7+6c/6=-3 | | 7+x=-85 | | n/2+9=20 | | 0.9x=0.04x-4.3 | | 3x(-2x(-2x)+4x-7)=0 | | n/7+11=13 | | 8(x+2)=-16 | | 39=d-3 | | 9-2x=5x=12 | | 3x(-2x^2+4x-7)=0 | | 4(x+9)-8(4x-9)=18 | | 3g?2g=15 | | -37.5=2.5+5r | | 6(x-3)+3x=5(x-2 | | (2p+3)(2p-3)(p+7)=0 | | 9x-9=3(3x+4) |

- Equations solver - equations involving one unknown
- Quadratic equations solver
- Percentage Calculator - Step by step
- Derivative calculator - step by step
- Graphs of functions
- Factorization
- Greatest Common Factor
- Least Common Multiple
- System of equations - step by step solver
- Fractions calculator - step by step
- Theory in mathematics
- Roman numerals conversion
- Tip calculator
- Numbers as decimals, fractions, percentages
- More or less than - questions